4.1 Article

Polyphosphoric acid supported on silica-coated NiFe2O4 nanoparticles: An efficient and magnetically-recoverable catalyst for N-formylation of amines

Journal

COMPTES RENDUS CHIMIE
Volume 17, Issue 5, Pages 459-464

Publisher

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crci.2013.07.013

Keywords

Amines; N-formylation; Magnetic recovery; Polyphosphoric acid; Silica-coated NiFe2O4

Funding

  1. Ferdowsi University of Mashhad

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A rapid, green and simple method for the N-formylation of various aromatic amines with formic acid using polyphosphoric acid supported on silica-coated NiFe2O4 magnetic nanoparticles (NiFe2O4@SiO2-PPA) under solvent-free conditions at room temperature has been developed. The magnetic catalyst can be easily removed by a simple magnet and reused at least three times without any loss of its high catalytic activity. In addition to its facility, this protocol enhances product purity and promises economic and also environmental profits. (C) 2013 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

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